Solved
STM32MP15 ECO 5.0.0 how to create scmi dtsi for custom board
When generating u-boot an error occurs: stm32mp15-scmi-u-boot.dtsi:135.1-6 Label or path scmi not found. Following the steps in the OpenSTLinux 5.0 workshop document to update the device tree files. It mentions to include an scmi.dtsi file for u-boot for the specific board. Is there any more information how to do this? This is a custom board with an STM32MP157AAA3 using legacy power. (regulators not PMIC) and this board worked fine with a previous ECO system but in ECO 5.0.0 SCMI was introduced.